|On the natural shift of a resonance frequency. (Volume NBS Technical Note 346) - Harrach, Robert James|
The natural resonance frequency shift, caused by the transition-inducing radiation field, is examined for a magnetic dipole transition between hyperfine structure levels in the ground state of a thallium atom.A calculation predicts, for an atomic beam exp
Keywords: Nuclear magnetic resonance
|Construction and operation of a nuclear magnetic resonance probe - Prevo, Charles Telman.|
This volume was digitized and made accessible online due to deterioration of the original print copy.
Keywords: Nuclear magnetic resonance
|Human in-vivo cardiac phosphorus NMR spectroscopy at 3.0 Tesla - Bruner, Angela Properzio|
Keywords: Nuclear magnetic resonance spectroscopy
|Nuclear relaxation in fluorine-containing liquids. - Watkins, Charles Lee, 1942-|
Keywords: Nuclear magnetic resonance; Fluorine
|Novel pulse methods for multidimensional NMR imaging and spectroscopy - Cockman, Michael D.|
Keywords: Nuclear magnetic resonance; Magnetic resonance imaging; Nuclear magnetic resonance spectroscopy
|Signal-to-noise ratio improvement in NMR via receiver hardware optimization - Duensing, George Randall|
Keywords: Signal processing; Nuclear magnetic resonance
|Trends in the proton NMR spectra of some amine-haloboranes: steric effects - Myers, William Howard|
Keywords: Amines; Haloboranes; Nuclear magnetic resonance
|Polycyclic azines : synthesis and the use of nuclear magnetic resonance techniques for structural, mechanistic, and kinetic elucidation - Dill, Carlton|
Keywords: Heterocyclic compounds--Synthesis; Nuclear magnetic resonance spectroscopy
|Multinuclear NMR study of organosilances - Kanyha, Paul John|
Keywords: Organosilicon compounds; Nuclear magnetic resonance spectrometry
|Novel techniques for pulsed field gradient NMR measurements - Brey, William W.|
Keywords: Nuclear Magnetic Resonance; Magnetic Resonance Spectroscopy
|Nuclear relaxation study of molecular motion in liquid and solid ammonia - Carolan, James Lynn|
Keywords: Molecular dynamics; Nuclear magnetic resonance; Ammonia
|Nuclear magnetic resonance study of the trifluorovinyl group - Moreland, Charles Glen, 1936-|
Keywords: Nuclear magnetic resonance; Organofluorine compounds; Magnetic Resonance Spectroscopy
|Nuclear magnetic resonance in metals - Matzkanin, George Andrew, 1938-|
Keywords: Nuclear magnetic resonance; Metals; Knight shift; Magnetic Resonance Spectroscopy
|Synthesis of antimony-nitrogen compounds by ammonolysis and chloramination reactions - McKenney, Robert Lee, 1936-|
Keywords: Chloramine; Antimony; Nitrogen; Infrared spectra; Nuclear magnetic resonance
|Physics - NON|
Spectrometer for simultaneous NMR spectra, gas chromatography, relativistic collapse to Schwarzschild sphere, and Gibbs phenomenon
Keywords: COLLAPSE; NUCLEAR MAGNETIC RESONANCE; SCHWARZSCHILD METRIC; SPECTROMETER; GAS CHROMATOGRAPHY; GIBBS PHENOMENON; NUCLEAR MAGNETIC RESONANCE; SCHWARZSCHILD METRIC; SPECTROMETERS; SPHERES; GAS CHROMATOGRAPHY; GIBBS PHENOMENON
|Spacecraft radio - NON|
Mechanical and electrical design data on electrostatically focused amplifier with radiation-cooled collector system
Keywords: CHLORINE; REACTION KINETICS; CYCLOTRON RESONANCE; FLUORINE; ISOTOPES; NUCLEAR MAGNETIC RESONANCE; ENERGY LEVELS; HYDROGEN; IONS; ITERATION
|Two-Dimensional FT-Nuclear Magnetic Resonance Imaging (02/10/2011) - I. C. Baianu, Editor, with listed contributors|
This contributed book covers the fundamentals as well as the applications of 2D-FT NMRI.
Keywords: 2D-FT NMRI/MRI; Nuclear Magnetic Resonance Imaging applications; Fourier Transform and FFT
|Diffraction of molecular beams - Estermann, I.|
No Abstract Available
Keywords: MAGNETIC FIELDS; MEASURING INSTRUMENTS; WEAK ENERGY INTERACTIONS; INHOMOGENEITY; NUCLEAR MAGNETIC RESONANCE
|Modeling Piezoelectric Stack Actuators for Control of Micromanipulation - Goldfarb, Michael|
A nonlinear lumped-parameter model of a piezoelectric stack actuator has been developed to describe actuator behavior for purposes of control system analysis and design, and, in particular, for microrobotic applications requiring accurate position and/or force control. In formulating this model, the authors propose a generalized Maxwell resistive capacitor as a lumped-parameter causal representation of rate-independent hysteresis...
Keywords: CARBON 13; NUCLEAR MAGNETIC RESONANCE; POLYMERIZATION; CROSSLINKING; POLYIMIDES; RADICALS; CURING; ISOTOPES
|Fluorescent antibody detection of microorganisms in terrestrial environments - Schmidt, E. L|
The fluorescent antibody technique and its use in direct microscopic examination of the soil is discussed. Feasibility analyses were made to determine if the method could be used to simultaneously observe and recognize microorganisms in the soil. Some data indicate this may be possible. Data are also given on two related problems involving the interaction of soil microorganisms with plant roots to form symbiotic structures...
Keywords: FLUORINE; HYDROGEN; LUNAR SOIL; POLLUTION; APOLLO 17 FLIGHT; ION IMPLANTATION; NUCLEAR MAGNETIC RESONANCE; TEFLON (TRADEMARK)
|Relevance of knight shift measurements to the electronic density of states (Volume 74A) - Bennett, L.H.|
Journal of Research of the National Bureau of Standards
Keywords: Electronic density of states; hyperfine fields; Knight shift; nuclear magnetic resonance; susceptibility; wave functions
|Apollo wind tunnel program report - NON|
No Abstract Available
Keywords: ETHYL ALCOHOL; ISOTOPIC LABELING; METABOLISM; BIOCHEMISTRY; CARBON 13; DEUTERIUM; NUCLEAR MAGNETIC RESONANCE; RATS
|Dynamics of Large-Scale Structures for Jets in Crossflow - Muldoon, Frank|
Results of a three dimensional unsteady computational study of a row of jets injected normal to a cross-flow are presented with the aim of understanding the dynamics of the large scale structures in the region near the jet. The jet to cross-flow velocity ratio is .5. A modified version of the computer program (INS3D) which utilizes the method of artificial compressibility is used for the computations...
Keywords: PHOSPHORYLATION; GLYCERIDES; AQUEOUS SOLUTIONS; PHOSPHATES; CARBOHYDRATE METABOLISM; PROPIONIC ACID; NUCLEAR MAGNETIC RESONANCE; BIOCHEMISTRY
|Bifurcated study of spin-lattice relaxation information in nuclear magnetic resonance imaging : quantitative analysis with conventional techniques and the unconventional stimulated echo imaging technique - Sattin, William|
Keywords: Spin-lattice relaxation; Magnetic resonance imaging; Nuclear magnetic resonance spectroscopy; Relaxation (Nuclear physics
|A candidate architecture for monitoring and control in chemical transfer propulsion systems - Binder, Michael P.|
To support the exploration of space, a reusable space-based rocket engine must be developed. This engine must sustain superior operability and man-rated levels of reliability over several missions with limited maintenance or inspection between flights. To meet these requirements, an expander cycle engine incorporating a highly capable control and health monitoring system is planned. Alternatives for the functional organization and the implementation architecture of the engine's monitoring and co...
Keywords: CATALYSTS; ESTERS; NUCLEAR MAGNETIC RESONANCE; PEPTIDES; RIBOSE; ELUTION; GENETIC CODE; ISOMERS; MODELS; PROTEIN SYNTHESIS; PURIFICATION; ACETIC ACID; ADENINES
|A nuclear magnetic resonance and relaxation study of dimethoxyborane (Volume 73A) - Farrar, T.C.|
Journal of Research of the National Bureau of Standards
Keywords: Boron-10; boron-11; dimethoxyborane; proton; pulsed nuclear magnetic resonance; scalar and quadrupolar coupling constants and relaxation effects
|Multiple Jet Study Data Correlation - Walker, R. E.|
Correlations are presented which allow determination of penetration and mixing of multiple cold air jets injected normal to a ducted subsonic heated primary air stream. Correlations were obtained over jet-to-primary stream momentum flux ratios of 6 to 60 for locations from 1 to 30 jet diameters downstream of the injection plane. Injection orifice diameters used in the correlations ranged from 0.64 cm to 2.54 cm and orifice spacing/diameter ratios from 2 to 6 were used...
Keywords: LIQUID CRYSTALS; HEAT MEASUREMENT; OXAZOLE; DEUTERIUM COMPOUNDS; DIPHENYL COMPOUNDS; BENZOIC ACID; NUCLEAR MAGNETIC RESONANCE; TEMPERATURE EFFECTS; SPECTROSCOPY; MICROSCOPY
|Students as Ground Observers for Satellite Cloud Retrieval Validation - Chambers, Lin H.|
The Students' Cloud Observations On-Line (S'COOL) Project was initiated in 1997 to obtain student observations of clouds coinciding with the overpass of the Clouds and the Earth's Radiant Energy System (CERES) instruments on NASA's Earth Observing System satellites. Over the past seven years we have accumulated more than 9,000 cases worldwide where student observations are available within 15 minutes of a CERES observation...
Keywords: ARCHITECTURE (COMPUTERS); SYSTEMS ENGINEERING; PROGRAM VERIFICATION (COMPUTERS); FLIGHT CONTROL; DATA COLLECTION PLATFORMS; NUCLEAR MAGNETIC RESONANCE; FAULT TOLERANCE; DIGITAL SYSTEMS
|Parametric Analytical Studies for the Nonlinear Dynamic Response of the Tile/Pad Space Shuttle Thermal Protection System - Edighoffer, H|
The studies examined for imposed sinusoidal and random motions of the shuttle skin and/or applied tile pressure. Studies are performed using the computer code DYNOTA which takes into account the highly nonlinear stiffening hysteresis and viscous behavior of the pad joining the tile to the shuttle skin. Where available, experimental data are used to confirm the validity of the analysis. Both analytical and experimental studies reveal that the system resonant frequency is very high for low amplitu...
Keywords: CONFERENCES; MICROPHOTOGRAPHS; NUCLEAR MAGNETIC RESONANCE; TECHNOLOGY TRANSFER; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; INFRARED SPECTROSCOPY; LAW (JURISPRUDENCE); MICROANALYSIS; ULTRAVIOLET SPECTROSCOPY; X RAY ANALYSIS; IMAGING TECHNIQUES
|Digital Distortion Caused by Traveling- Wave-Tube Amplifiers Simulated - Kory, Carol L.|
Future NASA missions demand increased data rates in satellite communications for near real-time transmission of large volumes of remote data. Increased data rates necessitate higher order digital modulation schemes and larger system bandwidth, which place stricter requirements on the allowable distortion caused by the high-power amplifier, or the traveling-wave-tube amplifier (TWTA). In particular, intersymbol interference caused by the TWTA becomes a major consideration for accurate data detect...
Keywords: DIELS-ALDER REACTIONS; EXPERIMENT DESIGN; POLYMERIZATION; KETONES; ACRYLATES; PHOTOCHEMICAL REACTIONS; ACRYLIC RESINS; TRAPPING; THIN FILMS; THERMOGRAVIMETRY; NUCLEAR MAGNETIC RESONANCE; GLASS TRANSITION TEMPERATURE
|Investigation of laser polarized xenon magnetic resonance - Walsworth, Ronald L|
Ground-based investigations of a new biomedical diagnostic technology: nuclear magnetic resonance of laser polarized noble gas are addressed. The specific research tasks discussed are: (1) Development of a large-scale noble gas polarization system; (2) biomedical investigations using laser polarized noble gas in conventional (high magnetic field) NMR systems; and (3) the development and application of a low magnetic field system for laser polarized noble gas NMR.
Keywords: ORGANIC COMPOUNDS; NUCLEAR MAGNETIC RESONANCE; KETONES; INFRARED SPECTRA; HEXAMETHYLENETETRAMINE; GAS CHROMATOGRAPHY; FORMALDEHYDE; ETHYL ALCOHOL; DEUTERIUM; PHOTOLYSIS; INTERSTELLAR MATTER; COMETS; ICE; METHANE; METHYL ALCOHOL; INFRARED SPECTROSCOPY; ORGANIC MATERIALS
|Motion of charged particles in an axially asymmetrical mirror trap - Dubinina, A. N.|
Nonadiabatic parameters for electron motion in axially asymmetric magnetic mirror trap
Keywords: HALF SPACES; MILNE METHOD; MIXING; RESONANT FREQUENCIES; NUCLEAR MAGNETIC RESONANCE; WIENER HOPF EQUATIONS; ATOMIC EXCITATIONS; BOUNDARIES; ELECTROMAGNETIC ABSORPTION; ELECTROMAGNETIC RADIATION; INTEGRAL EQUATIONS; KERNEL FUNCTIONS
|Hyper-X Wind Tunnel Program - McClinton, C. R.|
This paper provides an overview of NASA's focused hypersonic technology program, called the Hyper-X Program. The Hyper-X Program, a joint NASA Langley and Dryden program, is designed to move hypersonic, air breathing vehicle technology from the laboratory environment to the flight environment, the last stage preceding prototype development. The Hyper-X research vehicle will provide the first ever opportunity to obtain data on an airframe integrated scramjet (supersonic combustion ramjet) propuls...
Keywords: NUCLEAR MAGNETIC RESONANCE; SOLENOIDS; LASER OUTPUTS; IMAGING TECHNIQUES; MEDICAL SERVICES; BLOOD; DIAGNOSIS; LASERS; XENON ISOTOPES; POLARIZATION CHARACTERISTICS; MAGNETIC FIELDS; GAS PRESSURE; CHAMBERS; SEMICONDUCTOR LASERS; OPTICAL PUMPING
|Performance of AEA 80 Ah Battery under GEO Profiles - Russel, N.|
This viewgraph presentation is divided into the following sections: 1) AEA Geosynchronous Earth Orbit (GEO) Life Testing; 2) AEA/Goddard Space Flight Center (GSFC) 20 Ah Battery; 3) AEA/GSFC 80 Ah Battery; 4) Solar Dynamic Observatory (SDO) Life Test; 5) Test Results; 6) Correlation; 7) Conclusions.
Keywords: AEROGELS; SILANES; CHEMICAL REACTIONS; MODULUS OF ELASTICITY; SCANNING ELECTRON MICROSCOPY; STRESS-STRAIN DIAGRAMS; NANOPARTICLES; EXPERIMENT DESIGN; AMINES; CROSSLINKING; EPOXY RESINS; POROUS MATERIALS; SILICON DIOXIDE; CARBON 13; GELS; NUCLEAR MAGNETIC RESONANCE